Revert "gut gpg.fish/gpg1.fish/gpg2.fish; migrate functionality to __fish_complete_gpg.fish"
This reverts commit d558218d03.
Revert "break version-specific completions out into independent function;"
This reverts commit 9160e77b01.
Revert "split gpg2- and gpg1-specific completions to conditional block"
This reverts commit a069b95f63.